Temporary binder.



A N.785,07a.. lPJMEEJHTBD'lut-.4m21, 1905.

' M. o. BoNG.

TEMPORARY BINDER.V

A.PPLIOATION FILED JULY 27. 1904l with/@55653: I fifi@ ff y Mmm OO/zg,

No. 785,07 s.

Patented March 21, 1905.

MARTIN OLOF BONG, OF CHRISTIANSTAD, SWEDEN.

TEMPORARY BINDER.

SPECIFICATION forming part of Letters Patent IO. 785,078, dated March 21, 1905.

T al?, whom, it may con/cern;

Be it known that'I, MARTIN OLoF BoNG, a subject of the King of Sweden and Norway, residing at Christianstad, Sweden, have invented certain new and useful Improvements in Temporary Binders, of which the following is a specification.

This invention relates to temporary binders, and has for its object to provide an imio proved device of this character which is ca pable of opening upon a hinge to facilitate the introduction and removal of loose sheets and which is arranged to facilitate the turnl ing of the sheets from one side to the other of the binder.

A further object of the invention is to provide for locking the hinge of the binder in the normal condition of the latter, so as to maintain the impaling-pins and other parts of the 2o device in 'fixed relations, and to provide for conveniently releasing the hinge to permit of the back of the binder being broken or folded back to bring the impaling-pins into position for insertion and removal of loose sheets.

A still further object of the invention is to effect an automatic breaking or'folding of the back when the locking means is released and to have said locking means always exposed in position for convenient access.

o With these and other objects in view the present invention consists in the combination and arrangement of the parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particu- 5 larly pointed out in the appended claims, it

- being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advantagesof the invention.l

In the accompanying drawings, Figure 1 is a plan view of a temporary binder embodying the features of the present invention. Fig. 2 is across-sectional view on theline 2 2 of Fig. 1 in the normal condition of the binder. Fig. 3 is a similar view on the line 3 3, with l the back of the binder broken or folded to permit insertion and removal of loose sheets.

Fig. 4 is a detail view of the binder inverted tion of the spring-arm Application filed July Z7, 1904. Serial No. 218,403.

to show the means for locking and releasing the catch member. Fig. 5 is an edge view. thereof.

Like characters of reference designate corresponding parts in each and every figure of the drawings. l

The present device includes plate members 2 and 2a, which are connected at their inner edges by spaced hinge-knuckles 2b with a pintle 3, serving for both knuckles, there being a helical spring 4 wound about the intle, with its opposite ends engaged with t e respective plate members under tension, so as to tend to fold the plate members back upon themselves, as indicated in Fig. 3. These plate or hinge members are secured by screws or other suitable fastenings to the back members 1 and Ia. The outer edge of each plate flange 5, and to these flanges are connected bowed or arcuate impaling-pins 6, which arch upwardly in the normal condition of the binder and are arranged in pairs, with one member of each pair carried by one flange and the other memberl carried by the opposite flange.

To maintain the plate members in substantial alinement in the normal condition of the binder, an arcuate latch 7 is rigidly carried by one end of one of the members and has its smaller end projected downwardly through a slot or opening 8 in the other member. -Upon the under side of the member 2 there is a pivotal catch9, which has its hooked end working across the slot 8, so as to engage one of a series of perforations l0 in the free end of the latch 7, as best illustrated in Fig. 2 of the drawings. A suitable spring c is connected to the under side of the member 2 and engages the catch 9 to yieldably maintain the latter in engagement with the latch. To facilitate disengagement of the catch from the latch, a spring-arm 1l is secured to the under side of the member 2 and has its free end bent upwardlyl and passed through an opening in the member 2 and provided with a linger-piece 12 upon the upper side of the plate member, said end porlying against the inmember is bent up to produce a ner edge of the pivotal catch 9 and operating as a trip-cam to force the latch out of engagement with the catch when the fingerpiece 12 is depressed.

With the device locked in its normal position, as in Fig. 2, to insert or remove a loose sheet the nger-piece 12 is depressed, thereby disengaging the catch 9 from the latch 7, whereupon the spring 3 will automatically break the joint between the members 2 and 2a, so as to fold the same backwardly, as in` dicated in Fig. 3, whereby the impaling-pins 6 will be thrown into an upright position, with their free ends separated suiiiciently to permit of a sheet being engaged with or disengaged from the pins. After a sheet has been inserted or removed the backs are returned to their normal positions, thereby swinging the impaling-pins inwardly in opposite directions, so as to lap one another, the free end of the latch 7 being projected through the openings 8 and engaged by the springcatch 9, so as to again lock the device in its normal condition. A

When the binder has been filled with loose leaves and they are so tightly held therein as to make it diiiicult to turn quickly the leaves, the latter may be loosened by depressing the finger-piece 12 so as to disengage the catch 9 from the latch 7 and then rengage the former in one of the outer perforations 10 of the latch, which moves each set of impalingpins endwise past the other set, so as to give more room between the fixed end of one set and the fixed end of the other set, thereby loosening the leaves sufliciently to permit convenient turning thereof without danger of the leaves becoming detached.

under side of said other member for engagement with the latch, a spring-arm secured to the under side of said other member and having its free end provided with a lateral trip portion piercing the adjacent member and provided upon its upper end with a iinger-piece, the trip portion of the spring-arm lying in coperative relation with the catch to disengage the same from the latch when the linger-piece is depressed.

2. A temporary binder comprising hinged members having arcuate impaling-pins overlapping across the joint thereof, a latch carried by one of the members with its free end piercing the other member, a spring-catch pivoted upon the under side of said other member for engagement with the latch, and a spring-arm secured to the under side of said other member and provided with a lateral trip portion piercing the adjacent member and provided upon its upper end with a iinger-piece, said trip portion being disposed in coperative relation with the spring-catch to disengage the latter from the latch When the ger-piece is depressed.

ln witness whereof l have hereunto set my hand in presence of two Witnesses.

MARTIN OLOF BON G.

Witnesses:

CFR. BILLING, MATTE HELLR PROIN. 

